1 /* 2 * Copyright (C) 2004-2010 NXP Software 3 * Copyright (C) 2010 The Android Open Source Project 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 /********************************************************************************** 19 INCLUDE FILES 20 ***********************************************************************************/ 21 22 #include "Mixer_private.h" 23 #include "LVM_Macros.h" 24 25 /********************************************************************************** 26 FUNCTION CORE_MIXSOFT_1ST_D32C31_WRA 27 ***********************************************************************************/ 28 29 #ifdef BUILD_FLOAT /* BUILD_FLOAT */ 30 void Core_MixInSoft_D32C31_SAT( Mix_1St_Cll_FLOAT_t *pInstance, 31 const LVM_FLOAT *src, 32 LVM_FLOAT *dst, 33 LVM_INT16 n) 34 { 35 LVM_FLOAT Temp1,Temp2,Temp3; 36 LVM_INT16 OutLoop; 37 LVM_INT16 InLoop; 38 LVM_FLOAT TargetTimesOneMinAlpha; 39 LVM_FLOAT CurrentTimesAlpha; 40 LVM_INT16 ii,jj; 41 42 43 InLoop = (LVM_INT16)(n >> 2); /* Process per 4 samples */ 44 OutLoop = (LVM_INT16)(n - (InLoop << 2)); 45 46 TargetTimesOneMinAlpha = ((1.0f -pInstance->Alpha) * pInstance->Target); 47 if (pInstance->Target >= pInstance->Current){ 48 TargetTimesOneMinAlpha +=(LVM_FLOAT)(2.0f / 2147483647.0f); /* Ceil*/ 49 } 50 51 if (OutLoop){ 52 53 CurrentTimesAlpha = pInstance->Current * pInstance->Alpha; 54 pInstance->Current = TargetTimesOneMinAlpha + CurrentTimesAlpha; 55 56 for (ii = OutLoop; ii != 0; ii--){ 57 Temp1 = *src++; 58 Temp2 = *dst; 59 60 Temp3 = Temp1 * (pInstance->Current); 61 Temp1 = Temp2 + Temp3; 62 63 if (Temp1 > 1.0f) 64 Temp1 = 1.0f; 65 else if (Temp1 < -1.0f) 66 Temp1 = -1.0f; 67 68 *dst++ = Temp1; 69 } 70 } 71 72 for (ii = InLoop; ii != 0; ii--){ 73 74 CurrentTimesAlpha = pInstance->Current * pInstance->Alpha; 75 pInstance->Current = TargetTimesOneMinAlpha + CurrentTimesAlpha; 76 77 for (jj = 4; jj!=0 ; jj--){ 78 Temp1 = *src++; 79 Temp2 = *dst; 80 81 Temp3 = Temp1 * (pInstance->Current); 82 Temp1 = Temp2 + Temp3; 83 84 if (Temp1 > 1.0f) 85 Temp1 = 1.0f; 86 else if (Temp1 < -1.0f) 87 Temp1 = -1.0f; 88 *dst++ = Temp1; 89 } 90 } 91 } 92 #else 93 void Core_MixInSoft_D32C31_SAT( Mix_1St_Cll_t *pInstance, 94 const LVM_INT32 *src, 95 LVM_INT32 *dst, 96 LVM_INT16 n) 97 { 98 LVM_INT32 Temp1,Temp2,Temp3; 99 LVM_INT16 OutLoop; 100 LVM_INT16 InLoop; 101 LVM_INT32 TargetTimesOneMinAlpha; 102 LVM_INT32 CurrentTimesAlpha; 103 LVM_INT16 ii,jj; 104 LVM_INT16 CurrentShort; 105 106 InLoop = (LVM_INT16)(n >> 2); /* Process per 4 samples */ 107 OutLoop = (LVM_INT16)(n - (InLoop << 2)); 108 109 MUL32x32INTO32((0x7FFFFFFF-pInstance->Alpha),pInstance->Target,TargetTimesOneMinAlpha,31); /* Q31 * Q0 in Q0 */ 110 if (pInstance->Target >= pInstance->Current){ 111 TargetTimesOneMinAlpha +=2; /* Ceil*/ 112 } 113 114 if (OutLoop){ 115 MUL32x32INTO32(pInstance->Current,pInstance->Alpha,CurrentTimesAlpha,31); /* Q0 * Q31 in Q0 */ 116 pInstance->Current = TargetTimesOneMinAlpha + CurrentTimesAlpha; /* Q0 + Q0 into Q0*/ 117 CurrentShort = (LVM_INT16)(pInstance->Current>>16); /* From Q31 to Q15*/ 118 119 for (ii = OutLoop; ii != 0; ii--){ 120 Temp1=*src++; 121 Temp2=*dst; 122 MUL32x16INTO32(Temp1,CurrentShort,Temp3,15) 123 Temp1=(Temp2>>1)+(Temp3>>1); 124 125 if (Temp1 > 0x3FFFFFFF) 126 Temp1 = 0x7FFFFFFF; 127 else if (Temp1 < - 0x40000000) 128 Temp1 = 0x80000000; 129 else 130 Temp1=(Temp1<<1); 131 *dst++ = Temp1; 132 } 133 } 134 135 for (ii = InLoop; ii != 0; ii--){ 136 MUL32x32INTO32(pInstance->Current,pInstance->Alpha,CurrentTimesAlpha,31); /* Q0 * Q31 in Q0 */ 137 pInstance->Current = TargetTimesOneMinAlpha + CurrentTimesAlpha; /* Q0 + Q0 into Q0*/ 138 CurrentShort = (LVM_INT16)(pInstance->Current>>16); /* From Q31 to Q15*/ 139 140 for (jj = 4; jj!=0 ; jj--){ 141 Temp1=*src++; 142 Temp2=*dst; 143 MUL32x16INTO32(Temp1,CurrentShort,Temp3,15) 144 Temp1=(Temp2>>1)+(Temp3>>1); 145 146 if (Temp1 > 0x3FFFFFFF) 147 Temp1 = 0x7FFFFFFF; 148 else if (Temp1 < - 0x40000000) 149 Temp1 = 0x80000000; 150 else 151 Temp1=(Temp1<<1); 152 *dst++ = Temp1; 153 } 154 } 155 } 156 #endif 157 /**********************************************************************************/ 158
